base.jee.api.sql.util.UserHasResourceRole Maven / Gradle / Ivy

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package base.jee.api.sql.util;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

/**
 * Check if the given token is allocated the specified role. Returns the personId
 * if the person associated with this token does have the specified role.
 * Returning the personId instead of true or false is slightly clunky, however
 * in many cases it is saving having to do two separate queries against the
 * database, which is a minor performance optimisation.
 */
public class UserHasResourceRole {

	/**
	 * Check if the given token is allocated the specified role with a specific resource.
	 *
	 * @param c
	 * @param token
	 * @param role
	 * @return Returns the personId if this person is allocated this role, otherwise returns 0.
	 * @throws SQLException
	 */
	public static long userHasResourceRole(Connection c, String token, String role, String resource, String uid) throws SQLException {
		long personId = 0;

		PreparedStatement s = null;
		s = c.prepareStatement(
				"select distinct t.person_uuid "+
				"from token t join role r on (t.token=? and t.person_uuid=r.person_uuid and r.role=? and r.resource_type=? and r.resource_uid=?)");
		s.setString(1, token);
		s.setString(2, role);
		s.setString(3, resource);
		s.setString(4, uid);
		ResultSet r = s.executeQuery();
		if(r.next()) {
			personId = r.getLong(1);
		}
		r.close();
		s.close();

		return personId;
	}

}